Sofa



FIG. 1 is a perspective view of a sofa showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a right side elevational view thereof.

The broken away portions shown in the drawing Figures are meant to indicate indeterminate length and form no part of the claimed design. 

CLAIM The ornamental design for a sofa, as shown and described. 